best bet is to get a pushrod length checker. its cheaper than ordering a second set of pushrods and you need to ensure you have proper valvetrain geometry. luckily with a stud mount rocker you can get away easier with the slightly wrong length pushrod than you can with pedistal rockers. changing anything in valvetrain can change pushrod length so you cant always count on stock pushrods fitting.

5.8 flat tappet use 8.182" long push rods stock.

that cam only has 110 LSA. the EFI may not like you very much without tuning

 

best bet is to get a pushrod length checker. its cheaper than ordering a second set of pushrods and you need to ensure you have proper valvetrain geometry. luckily with a stud mount rocker you can get away easier with the slightly wrong length pushrod than you can with pedistal rockers. changing anything in valvetrain can change pushrod length so you cant always count on stock pushrods fitting.

5.8 flat tappet use 8.182" long push rods stock.

that cam only has 110 LSA. the EFI may not like you very much without tuning

also I have been reading a lot about the AFR 185 SBF heads, is there a significant differenece between the renegade and enforcer? they have the same specs just a $700 difference

 

What year bronco you got? You planning on keeping the factory EFI or going aftermarket? Was this ride already a 5.8 or was it a 5.0 and you're swapping up? Kingfish was hitting on something very important, if you have a factory EFI 5.8 right now those systems don't like too many changes, it can't handle them without having a custom computer or doing a MAF swap (either way isn't very cheap). So thats just something to keep in mind and something I learned. Fortunately the very knowledgeable guys and gals here were able to educate me before i made some expensive mistakes.

 

1991 bronco, late 80's engine original EFI with bigger injectors and fuel pump
I am planning to use something like the PIMPXS ECU and PCM so I can tune the engine easy

best bet is to get a pushrod length checker. its cheaper than ordering a second set of pushrods and you need to ensure you have proper valvetrain geometry. luckily with a stud mount rocker you can get away easier with the slightly wrong length pushrod than you can with pedistal rockers. changing anything in valvetrain can change pushrod length so you cant always count on stock pushrods fitting.

5.8 flat tappet use 8.182" long push rods stock.

that cam only has 110 LSA. the EFI may not like you very much without tuning

-pimp ecu and have that length checker on order

 

Renegade heads have a different port geometry, gives a more direct shot to the combustion chamber. Usually this requires special block work and intake and all but they say you don’t need that with these. That’s probably where the difference in expense is. For your application you’re not going to need that. You won’t get that benefit until over 6000 rpm and would probably actually hurt you on the bottom end.


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Enforcer heads are an "As-cast" head. Renegade is the original AFR head and has milled runners and combustion chamber. I ran a set of race ported AFR165s on my old 94 351. With comp 35-512-8 and 10.5:1 compression, I was making 340hp (5400 rpm) and 475 ft/lbs (2000 rpm).

As noted, the comp 35-238-8 is not computer friendly, unless you go the route you have chosen with an aftermarket tune/ecu. That cam in particular will have great low end torque and good power through 5000 rpms. I plan on using it or its little brother 234-8 in a factory style rebuild with a holley sniper in the near future.

Consider Smith Brothers pushrods. Im running their 3/8 heavy wall push rods in my 300, which are 10.25" long. Excellent quality.

 

Enforcer heads are an "As-cast" head. Renegade is the original AFR head and has milled runners and combustion chamber. I ran a set of race ported AFR165s on my old 94 351. With comp 35-512-8 and 10.5:1 compression, I was making 340hp (5400 rpm) and 475 ft/lbs (2000 rpm).

As noted, the comp 35-238-8 is not computer friendly, unless you go the route you have chosen with an aftermarket tune/ecu. That cam in particular will have great low end torque and good power through 5000 rpms. I plan on using it or its little brother 234-8 in a factory style rebuild with a holley sniper in the near future.

Consider Smith Brothers pushrods. Im running their 3/8 heavy wall push rods in my 300, which are 10.25" long. Excellent quality.

I'm shooting for about 400hp/ torque range to have some fun with this truck, what injectors flow rate were you running, and what octane for your CR? I know aluminum heads are more forgiving on lower octane fuel, but the 5.8 doesnt have a knock sensor

 

the Enforcer heads are pretty new, released early last year. they are an 'as-cast' head made in china head. alot of cylinder head companies now do this as a budget head and most use the same basic cast so they all flow about the same as eachother (Dart Pro 1 clones apparently). the advantage the Enforcer has is that it uses the same components as the Renegades so they are decent quality compared to some of the other brands. Edelbrock E-street for example has terrible springs that cant handle roller cams.

because the heads are as-cast, they have rough runners and are not quite optimized and dont flow as well. even tho they are 185cc runner with larger valve, they flow less than the Renegade 165 which would have more velocity. they do not have any provisions for emissions like the 165/185 Renegades do which some people want (never know when your state will decide to require emissions testing). the Renegades made in USA which alot of people perfer. talk on the Mustang forums about them are that most people perfer the Renegades because by the time you spend money porting them to match the Renegades you could have jsut got the Reneages.

seems liek the price of the Enforcer heads has come down tho. think they were like 1200-1300 last year making the Renegades more desireable. they would work good on a truck where max performance is not what you are after.

185 Enforcer flow

	.200	.300	.400	.500	.550	.600
Int	119	177	225	255	257	260
Exh	105	143	163	166	168	170

185 Renegade flow

	.200	.300	.400	.500	.550	.600
Int	142	195	247	276	285	289
Exh	118	164	200	210	213	215

165 Renegade flow

	.200	.300	.400	.500	.550	.600
Int	135	200	240	251	255	260
Exh	122	163	192	208	212	215

Renegade port vs Enforcer port

 

the Enforcer heads are pretty new, released early last year. they are an 'as-cast' head made in china head. alot of cylinder head companies now do this as a budget head and most use the same basic cast so they all flow about the same as eachother (Dart Pro 1 clones apparently). the advantage the Enforcer has is that it uses the same components as the Renegades so they are decent quality compared to some of the other brands. Edelbrock E-street for example has terrible springs that cant handle roller cams.

because the heads are as-cast, they have rough runners and are not quite optimized and dont flow as well. even tho they are 185cc runner with larger valve, they flow less than the Renegade 165 which would have more velocity. they do not have any provisions for emissions like the 165/185 Renegades do which some people want (never know when your state will decide to require emissions testing). the Renegades made in USA which alot of people perfer. talk on the Mustang forums about them are that most people perfer the Renegades because by the time you spend money porting them to match the Renegades you could have jsut got the Reneages.

seems liek the price of the Enforcer heads has come down tho. think they were like 1200-1300 last year making the Renegades more desireable. they would work good on a truck where max performance is not what you are after.

185 Enforcer flow

	.200	.300	.400	.500	.550	.600
Int	119	177	225	255	257	260
Exh	105	143	163	166	168	170

185 Renegade flow

	.200	.300	.400	.500	.550	.600
Int	142	195	247	276	285	289
Exh	118	164	200	210	213	215

165 Renegade flow

	.200	.300	.400	.500	.550	.600
Int	135	200	240	251	255	260
Exh	122	163	192	208	212	215

Renegade port vs Enforcer port
View attachment 181954 View attachment 181955 View attachment 181956

View attachment 181957 View attachment 181958 View attachment 181959

emissions isn't required in my state if vehicle is 25 years old (1991 body), i chose the enforcer's because they are half the price and have the same rating, but the $1000 isnt worth the extra few CC of air to me, especially since I need to get the Pimp ECU for the cam. BTW, do I also need to get the pimp PCM for my transmission?

 

I'm not super familiar with the PimpX. But I'm pretty sure you have to get the aftermarket transmission controller for E4OD trans. Definitely adds to cost which is why Id just swap to MAF and/or get a tuner.

 

its possible to get a tuner in OBD-1? I am open to doing that or possibly converting to maf if it would prove to be better

 

Quarterhorse and Tweecer are a couple of tuners. i use the QH but honestly id say get the TweecerRT.

i would get the entire harness for the engine bay and engine itself. then you can strip it doesn and use it as an overlay harness or then splice iti n your existing harness.